/*
 * Copyright (c) 2025 Li Auto Inc. and its affiliates
 * Licensed under the Apache License, Version 2.0(the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "crc.h"

#ifndef CRC_16_Mode
#define CRC_16_Mode CRC_16_INVALID
#endif

#ifndef CRC_16ARC_Mode
#define CRC_16ARC_Mode CRC_16ARC_INVALID
#endif
/* start_value,XorValue and Polynomial of CRC16 */

#ifdef CRC_16_Mode
#define CRC_16_CCITT_START_VAL 0xFFFFU
#define CRC_16_CCITT_POLY 0x1021U
#define CRC_16_CCITT_XOR 0x0000U
#endif

/* start_value,XorValue and Polynomial of CRC16ARC */
#ifdef CRC_16ARC_Mode
#define CRC_16ARC_START_VAL 0x0000U
#define CRC_16ARC_POLY 0xA001U /*! 0x8005 invert*/
#define CRC_16ARC_ARC_XOR 0x0000U
#endif

#define CRC_START_SEC_CODE
#include "crc_memmap.h"
#if CRC_16_Mode == CRC_16_RUNTIME

static FUNC(uint16, CRC_CODE) calculate_crc16(const uint8 *message, uint32 len, uint16 start_value, uint16 poly)
{
	uint16 crc_value = start_value;
	uint8 bit = 0;
	const uint16 top_bit = 0x8000;

	if (message != NULL_PTR) {
		for (uint32 byte_index = 0; byte_index < len; byte_index++) {
			crc_value ^= *(message) << 8;
			message++;
			for (bit = 0; bit < 8; bit++) {
				if ((crc_value & top_bit) > 0u) {
					crc_value = (crc_value << 1u) ^ poly;
				} else {
					crc_value = (crc_value << 1u);
				}
			}
		}
	} else {
		;
	}
	return crc_value;
}
#endif

#if CRC_16ARC_Mode == CRC_16_ARC_RUNTIME

static FUNC(uint16, CRC_CODE) cal_crc16_arc(const uint8 *message, uint32 len, uint16 start_value, uint16 poly)
{
	uint16 crc_value = start_value;
	uint8 bit = 0;
	const uint16 top_bit = 0x01;

	if (message != NULL_PTR) {
		for (uint32 byte_index = 0; byte_index < len; byte_index++) {
			crc_value ^= *(message);
			message++;
			for (bit = 0; bit < 8; bit++) {
				if ((crc_value & top_bit) > 0u) {
					crc_value = (crc_value >> 1u) ^ poly;
				} else {
					crc_value = (crc_value >> 1u);
				}
			}
		}
	} else {
		;
	}
	return crc_value;
}
#endif
#define CRC_STOP_SEC_CODE
#include "crc_memmap.h"

#define CRC_START_SEC_CONST
#include "crc_memmap.h"
#if CRC_16_Mode == CRC_16_TABLE
static const uint16 crc_16_tab[256] = {
	0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad,
	0xe1ce, 0xf1ef, 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, 0x9339, 0x8318, 0xb37b, 0xa35a,
	0xd3bd, 0xc39c, 0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b,
	0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
	0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861,
	0x2802, 0x3823, 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96,
	0x1a71, 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, 0x6ca6, 0x7c87,
	0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
	0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a,
	0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1, 0x30c2, 0x20e3,
	0x5004, 0x4025, 0x7046, 0x6067, 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, 0x02b1, 0x1290,
	0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
	0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e,
	0xc71d, 0xd73c, 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, 0xd94c, 0xc96d, 0xf90e, 0xe92f,
	0x99c8, 0x89e9, 0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c,
	0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
	0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83,
	0x1ce0, 0x0cc1, 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74,
	0x2e93, 0x3eb2, 0x0ed1, 0x1ef0

};
#endif
#define CRC_STOP_SEC_CONST
#include "crc_memmap.h"
#define CRC_START_SEC_CODE
#include "crc_memmap.h"
#if (CRC_16_Mode == CRC_16_RUNTIME) || (CRC_16_Mode == CRC_16_TABLE)
FUNC(uint16, CRC_CODE)
crc_calculate_16(const uint8 *data_ptr, uint32 len, uint16 start_val, boolean is_first_call)
{
	uint16 crc16 = 0;
	const uint8 *input_ptr = data_ptr;

	if (input_ptr != NULL_PTR) {
		crc16 = (TRUE == is_first_call) ? CRC_16_CCITT_START_VAL : (start_val ^ CRC_16_CCITT_XOR);
#if CRC_16_Mode == CRC_16_RUNTIME
		crc16 = calculate_crc16(input_ptr, len, crc16, CRC_16_CCITT_POLY);
#elif CRC_16_Mode == CRC_16_TABLE
		for (uint32 byte_num = 0; byte_num < len; byte_num++) {
			crc16 = (uint16)(crc16 << 8) ^ crc_16_tab[((crc16 >> 8) ^ *input_ptr) & 0x00FFU];
			input_ptr++;
		}
		crc16 = crc16 ^ CRC_16_CCITT_XOR;
#endif
	} else {
		;
	}
	return crc16;
}
#endif

#define CRC_STOP_SEC_CODE
#include "crc_memmap.h"

#define CRC_START_SEC_CONST
#include "crc_memmap.h"

#if CRC_16ARC_Mode == CRC_16_ARC_TABLE
static const uint16 crc_16arc_tab[256] = {
	0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, 0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1,
	0xC481, 0x0440, 0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, 0x0A00, 0xCAC1, 0xCB81, 0x0B40,
	0xC901, 0x09C0, 0x0880, 0xC841, 0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, 0x1E00, 0xDEC1,
	0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, 0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
	0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, 0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1,
	0xF281, 0x3240, 0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, 0x3C00, 0xFCC1, 0xFD81, 0x3D40,
	0xFF01, 0x3FC0, 0x3E80, 0xFE41, 0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, 0x2800, 0xE8C1,
	0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, 0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
	0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, 0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0,
	0x2080, 0xE041, 0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, 0x6600, 0xA6C1, 0xA781, 0x6740,
	0xA501, 0x65C0, 0x6480, 0xA441, 0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, 0xAA01, 0x6AC0,
	0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, 0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
	0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, 0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1,
	0xB681, 0x7640, 0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, 0x5000, 0x90C1, 0x9181, 0x5140,
	0x9301, 0x53C0, 0x5280, 0x9241, 0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, 0x9C01, 0x5CC0,
	0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, 0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
	0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, 0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0,
	0x4C80, 0x8C41, 0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, 0x8201, 0x42C0, 0x4380, 0x8341,
	0x4100, 0x81C1, 0x8081, 0x4040,

};
#endif

#define CRC_STOP_SEC_CONST
#include "crc_memmap.h"
#define CRC_START_SEC_CODE
#include "crc_memmap.h"

#if (CRC_16ARC_Mode == CRC_16_ARC_RUNTIME) || (CRC_16ARC_Mode == CRC_16_ARC_TABLE)
FUNC(uint16, CRC_CODE)
crc_calculate_16_arc(const uint8 *data_ptr, uint32 len, uint16 start_val, boolean is_first_call)
{
	uint16 crc16 = 0;
	const uint8 *input_ptr = data_ptr;

	if (input_ptr != NULL_PTR) {
		crc16 = (TRUE == is_first_call) ? CRC_16ARC_START_VAL : (start_val ^ CRC_16ARC_ARC_XOR);
#if CRC_16ARC_Mode == CRC_16_ARC_RUNTIME
		crc16 = cal_crc16_arc(input_ptr, len, crc16, CRC_16ARC_POLY);
#elif CRC_16ARC_Mode == CRC_16_ARC_TABLE
		for (uint32 byte_index = 0; byte_index < len; byte_index++) {
			crc16 = (uint16)(crc16 >> 8) ^ crc_16arc_tab[((crc16) ^ *input_ptr) & 0x00FFU];
			input_ptr++;
		}
#endif
	} else {
		;
	}
	/* only XOR value if any calculation was done */
	crc16 = crc16 ^ CRC_16ARC_ARC_XOR;
	return crc16;
}
#endif
#define CRC_STOP_SEC_CODE
#include "crc_memmap.h"
